3D late gadolinium enhancement (LGE) imaging is
performed with single R-wave gating to reduce the acquisition duration, but
image quality in patients with atrial fibrillation (AF) is poor due to
inconsistent longitudinal magnetisation recovery between cardiac cycles.
Image quality could potentially be improved by implementing a dynamic-TI
algorithm. Three-D data were acquired in 7 patients with variable heart rates
(6 prior to RF ablation of AF), both with and without the dynamic-TI
algorithm. We show that dynamic adaptation of the inversion time with each
cardiac cycle results in less ghosting and improved image quality in this
difficult patient population.